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Torun I, Huang C, Kalay M, Shim M, Onses MS. pH Tunable Patterning of Quantum Dots. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 20:e2305237. [PMID: 37658505 DOI: 10.1002/smll.202305237] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/04/2023] [Revised: 08/17/2023] [Indexed: 09/03/2023]
Abstract
Patterning of quantum dots (QDs) is essential for many, especially high-tech, applications. Here, pH tunable assembly of QDs over functional patterns prepared by electrohydrodynamic jet printing of poly(2-vinylpyridine) is presented. The selective adsorption of QDs from water dispersions is mediated by the electrostatic interaction between the ligand composed of 3-mercaptopropionic acid and patterned poly(2-vinylpyridine). The pH of the dispersion provides tunability at two levels. First, the adsorption density of QDs and fluorescence from the patterns can be modulated for pH > ≈4. Second, patterned features show unique type of disintegration resulting in randomly positioned features within areas defined by the printing for pH ≤ ≈4. The first capability is useful for deterministic patterning of QDs, whereas the second one enables hierarchically structured encoding of information by generating stochastic features of QDs within areas defined by the printing. This second capability is exploited for generating addressable security labels based on unclonable features. Through image analysis and feature matching algorithms, it is demonstrated that such patterns are unclonable in nature and provide a suitable platform for anti-counterfeiting applications. Collectively, the presented approach not only enables effective patterning of QDs, but also establishes key guidelines for addressable assembly of colloidal nanomaterials.
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Affiliation(s)
- Ilker Torun
- Department of Materials Science and Engineering, Nanotechnology Research Center (ERNAM), Erciyes University, Kayseri, 38039, Turkey
- Department of Materials Science and Engineering, University of Illinois Urbana-Champaign, Urbana, IL, 61801, USA
| | - Conan Huang
- Department of Materials Science and Engineering, University of Illinois Urbana-Champaign, Urbana, IL, 61801, USA
| | - Mustafa Kalay
- Nanotechnology Research Center (ERNAM), Erciyes University, Kayseri, 38039, Turkey
- Department of Electricity and Energy, Kayseri University, Kayseri, 38039, Turkey
| | - Moonsub Shim
- Department of Materials Science and Engineering, University of Illinois Urbana-Champaign, Urbana, IL, 61801, USA
| | - M Serdar Onses
- Department of Materials Science and Engineering, Nanotechnology Research Center (ERNAM), Erciyes University, Kayseri, 38039, Turkey
- UNAM-Institute of Materials Science and Nanotechnology, Bilkent University, Ankara, 06800, Turkey
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Frazier J, Cavey K, Coil S, Hamo H, Zhang M, Van Patten PG. Rapid and Sensitive Identification and Discrimination of Bound/Unbound Ligands on Colloidal Nanocrystals via Direct Analysis in Real-Time Mass Spectrometry. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2021; 37:14703-14712. [PMID: 34879204 DOI: 10.1021/acs.langmuir.1c02548] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Direct analysis in real-time mass spectrometry (DART-MS) has been applied to the characterization of colloidal nanocrystal surface ligands. The nanocrystals (NCs) in colloidal suspension were purified and deposited onto a solid substrate, and the solvent was allowed to evaporate. Ligand desorption was thermally stimulated using a temperature ramp from 30 °C up to 530 °C, and the desorbed ligands were introduced into a DART-MS instrument where metastable He atoms provide energy for ionization and fragmentation through the reaction with ambient vapors including O2 and H2O. The method allows the identification of ligand species with various functional groups, even in complex, mixed-ligand samples. Bound and unbound molecules can be distinguished based on the desorption temperature. In ideal cases, the desorption profile for a given molecule can be analyzed according to methods adapted from thermal desorption spectroscopy (TDS) to estimate desorption activation energy for NC-bound ligands. Results are presented and discussed for different nanocrystal and ligand types. The method is a promising complement to the range of existing tools for NC ligand analysis.
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Affiliation(s)
- Jared Frazier
- Department of Chemistry, Middle Tennessee State University, Murfreesboro, Tennessee 37132, United States
| | - Kevin Cavey
- Department of Chemistry, Middle Tennessee State University, Murfreesboro, Tennessee 37132, United States
| | - Sydney Coil
- Department of Chemistry, Middle Tennessee State University, Murfreesboro, Tennessee 37132, United States
| | - Helene Hamo
- Department of Chemistry, Middle Tennessee State University, Murfreesboro, Tennessee 37132, United States
| | - Mengliang Zhang
- Department of Chemistry, Middle Tennessee State University, Murfreesboro, Tennessee 37132, United States
| | - P Gregory Van Patten
- Department of Chemistry, Middle Tennessee State University, Murfreesboro, Tennessee 37132, United States
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Wu R, Luo J, Guo X, Wang X, Ma Z, Li B, Cheng LY, Miao X. Phosphorescence quenching study of Cu(II)-ions-induced Mn-doped ZnS quantum dots revealed by intensity- and lifetime-resolved spectroscopy. Chem Phys Lett 2021. [DOI: 10.1016/j.cplett.2021.138960] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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Selective fluorescence sensor based on ion-imprinted polymer-modified quantum dots for trace detection of Cr(VI) in aqueous solution. Anal Bioanal Chem 2019; 411:7165-7175. [DOI: 10.1007/s00216-019-02100-w] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2019] [Revised: 08/08/2019] [Accepted: 08/22/2019] [Indexed: 12/15/2022]
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Kim HJ, Jo JH, Yoon SY, Jo DY, Kim HS, Park B, Yang H. Emission Enhancement of Cu-Doped InP Quantum Dots through Double Shelling Scheme. MATERIALS 2019; 12:ma12142267. [PMID: 31311083 PMCID: PMC6678380 DOI: 10.3390/ma12142267] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/25/2019] [Revised: 07/10/2019] [Accepted: 07/11/2019] [Indexed: 11/16/2022]
Abstract
The doping of transition metal ions, such as Cu+ and Mn2+ into a quantum dot (QD) host is one of the useful strategies in tuning its photoluminescence (PL). This study reports on a two-step synthesis of Cu-doped InP QDs double-shelled with ZnSe inner shell/ZnS outer shell. As a consequence of the double shelling-associated effective surface passivation along with optimal doping concentrations, Cu-doped InP/ZnSe/ZnS (InP:Cu/ZnSe/ZnS) QDs yield single Cu dopant-related emissions with high PL quantum yields of 57–58%. This study further attempted to tune PL of Cu-doped QDs through the variation of InP core size, which was implemented by adopting different types of Zn halide used in core synthesis. As the first application of doped InP QDs as electroluminescent (EL) emitters, two representative InP:Cu/ZnSe/ZnS QDs with different Cu concentrations were then employed as active emitting layers of all-solution-processed, multilayered QD-light-emitting diodes (QLEDs) with the state-of-the-art hybrid combination of organic hole transport layer plus inorganic electron transport layers. The EL performances, such as luminance and efficiencies of the resulting QLEDs with different Cu doping concentrations, were compared and discussed.
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Affiliation(s)
- Hwi-Jae Kim
- Department of Materials Science and Engineering, Hongik University, Seoul 04066, Korea
| | - Jung-Ho Jo
- Department of Materials Science and Engineering, Hongik University, Seoul 04066, Korea
| | - Suk-Young Yoon
- Department of Materials Science and Engineering, Hongik University, Seoul 04066, Korea
| | - Dae-Yeon Jo
- Department of Materials Science and Engineering, Hongik University, Seoul 04066, Korea
| | - Hyun-Sik Kim
- Department of Materials Science and Engineering, Hongik University, Seoul 04066, Korea
| | - Byoungnam Park
- Department of Materials Science and Engineering, Hongik University, Seoul 04066, Korea.
| | - Heesun Yang
- Department of Materials Science and Engineering, Hongik University, Seoul 04066, Korea.
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Carvalho IC, Mansur AA, Carvalho SM, Florentino RM, Mansur HS. L-cysteine and poly-L-arginine grafted carboxymethyl cellulose/Ag-In-S quantum dot fluorescent nanohybrids for in vitro bioimaging of brain cancer cells. Int J Biol Macromol 2019; 133:739-753. [DOI: 10.1016/j.ijbiomac.2019.04.140] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2019] [Revised: 04/15/2019] [Accepted: 04/18/2019] [Indexed: 12/13/2022]
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Selvaraj J, Mahesh A, Baskaralingam V, Dhayalan A, Paramasivam T. Organic-to-water dispersible Mn:ZnS–ZnS doped core–shell quantum dots: synthesis, characterization and their application towards optical bioimaging and a turn-off fluorosensor. NEW J CHEM 2019. [DOI: 10.1039/c9nj02222h] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Dot-in-dot core/shell Mn:ZnS/ZnS QDs as a good fluorescent agent for bioimaging and a turn-off fluorescent probe for detection of heavy metal ions.
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Affiliation(s)
- Joicy Selvaraj
- Centre for Nanoscience and Technology
- Pondicherry University
- Puducherry – 605 014
- India
| | - Arun Mahesh
- Department of Biotechnology
- Pondicherry University
- Puducherry – 605 014
- India
| | | | - Arunkumar Dhayalan
- Department of Biotechnology
- Pondicherry University
- Puducherry – 605 014
- India
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Jo DY, Kim D, Kim JH, Chae H, Seo HJ, Do YR, Yang H. Tunable White Fluorescent Copper Gallium Sulfide Quantum Dots Enabled by Mn Doping. ACS APPLIED MATERIALS & INTERFACES 2016; 8:12291-7. [PMID: 27120773 DOI: 10.1021/acsami.6b01763] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
Fluorescence of semiconductor quantum dots (QDs) can be tuned by engineering the band gap via size and composition control and further doping them with impurity ions. Targeting on highly bright white-emissive I-III-VI -type copper gallium sulfide (Cu-Ga-S, CGS) host QDs with the entire visible spectral coverage of blue to red, herein, Mn(2+) ion doping, through surface adsorption and lattice diffusion is fulfilled. Upon doping a distinct Mn emission from (4)T1-(6)A1 transition successfully appears in white photoluminescence (PL) of undoped CGS/ZnS core/shell QDs and with varying Mn concentration a systematic white spectral evolution of CGS:Mn/ZnS QDs is achievable with high PL quantum yield retained. The origins of white PL of CGS:Mn/ZnS QDs that is well decomposed into three emission bands are appropriately assigned. The resulting single-phased, doped QDs are then employed as near-UV-to-white down converters for the fabrication of white light-emitting diodes (LEDs). Electroluminescent properties of white QD-LEDs depending on Mn concentration of CGS:Mn/ZnS QDs and forward current are also discussed in detail.
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Affiliation(s)
- Dae-Yeon Jo
- Department of Materials Science and Engineering, Hongik University , Seoul 121-791, Korea
| | - Daekyoung Kim
- Sungkyunkwan Advanced Institute of Nanotechnology, Sungkyunkwan University (SKKU) , Suwon 440-746, Korea
| | - Jong-Hoon Kim
- Department of Materials Science and Engineering, Hongik University , Seoul 121-791, Korea
| | - Heeyeop Chae
- Sungkyunkwan Advanced Institute of Nanotechnology, Sungkyunkwan University (SKKU) , Suwon 440-746, Korea
| | - Hyo Jin Seo
- Department of Physics, Pukyong National University , Busan 608-737, Korea
| | - Young Rag Do
- Department of Chemistry, Kookmin University , Seoul 136-702, Korea
| | - Heesun Yang
- Department of Materials Science and Engineering, Hongik University , Seoul 121-791, Korea
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Duan T, Liu Y, Zhang H, Jia J, Zhou X. Enhanced photoluminescence of water-soluble CdTe nanocrystals induced by light and pyridine. Colloids Surf A Physicochem Eng Asp 2015. [DOI: 10.1016/j.colsurfa.2014.10.016] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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Maity AR, Palmal S, Basiruddin SK, Karan NS, Sarkar S, Pradhan N, Jana NR. Doped semiconductor nanocrystal based fluorescent cellular imaging probes. NANOSCALE 2013; 5:5506-5513. [PMID: 23674276 DOI: 10.1039/c3nr00549f] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Doped semiconductor nanocrystals such as Mn doped ZnS, Mn doped ZnSe and Cu doped InZnS, are considered as new classes of fluorescent biological probes with low toxicity. Although the synthesis in high quality of such nanomaterials is now well established, transforming them into functional fluorescent probes remains a challenge. Here we report a fluorescent cellular imaging probe made of high quality doped semiconductor nanocrystals. We have identified two different coating approaches suitable for transforming the as synthesized hydrophobic doped semiconductor nanocrystals into water-soluble functional nanoparticles. Following these approaches we have synthesized TAT-peptide- and folate-functionalized nanoparticles of 10-80 nm hydrodynamic diameter and used them as a fluorescent cell label. The results shows that doped semiconductor nanocrystals can be an attractive alternative for conventional cadmium based quantum dots with low toxicity.
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Affiliation(s)
- Amit Ranjan Maity
- Centre for Advanced Materials and Department of Materials Science, Indian Association for the Cultivation of Science, Kolkata, 700032, India
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Cao J, Wang B, Han D, Yang S, Yang J, Wei M, Fan L, Liu Q, Wang T. Effects of surface modification and SiO2 thickness on the optical and superparamagnetic properties of the water-soluble ZnS:Mn2+ nanowires/Fe3O4 quantum dots/SiO2 heterostructures. CrystEngComm 2013. [DOI: 10.1039/c3ce40939b] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Huang CP, Chao CF, Shen MY, Chen TM, Li YK. Preparation of High-Performance Water-Soluble Quantum Dots for Biorecognition through Fluorescence Resonance Energy Transfer. Chem Asian J 2012; 7:2848-53. [DOI: 10.1002/asia.201200526] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2012] [Revised: 08/20/2012] [Indexed: 12/26/2022]
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